oj-bind-if not working in live mode

Summary

oj-bind-if not working in live mode

Content

Hi,

We have a java script condition in page.js which will be called and evaluated in oj-bind-if test condition while respective html page is rendering, 

This is working fine in preview mode , but if we run it in live mode its throwing below error.

Error : 

   VM1443:3 Uncaught (in promise) TypeError: Unable to process binding "if: function(){return $page.functions.showVABlade() }"
Message: Cannot read property 'showVABlade' of null

Attached is the code snippet of page javascript and oj-bind-if test condition from html code:

Javascript:

/* Hiding the VA Blade for mobile and Tablet screens. */